package com.lagou.base;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class BaseServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        resp.setContentType("text/html;charset=utf-8");

        String methodName = req.getParameter("methodName");
        if (methodName!=null){
//            if (methodName.equals("addCourse")) {
//                addCourse(req,resp);
//            }else if (methodName.equals("removeCourse")){
//                removeCourse(req, resp);
//            }
            //反射的机制自动调用


            try {
                Class c= this.getClass();
                Method method= c.getMethod(methodName,HttpServletRequest.class,HttpServletResponse.class);

                method.invoke(this,req,resp);

            } catch (NoSuchMethodException e) {
                e.printStackTrace();
            }catch (IllegalAccessException e) {
                e.printStackTrace();
            } catch (InvocationTargetException e) {
                e.printStackTrace();
            }
        }

    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}
